TORNEHAVE, H. On analytic functions of several variables. A theorem on analytic continuation. MATHEMATICA SCANDINAVICA, [S. l.], v. 1, p. 73–81, 1953. DOI: 10.7146/math.scand.a-10365. Disponível em: https://www.mscand.dk/article/view/10365. Acesso em: 5 may. 2024.